Harry ferguson



(No Model.) H. FERGUSON.

GOVBRING PORSGRBW HEADS.

No. 416,329. Patented Dec. s, 1889.

WL'zesses Y j 4%@ M7 @wf N. PETERS, Phallithnguphnr. Wnmmglnn. lLCy UNITED STATES ,PATENT OFFICE.

HARRY`FERGUSONpOF NEV YORK, N. Y.

COVERINGy FOR SCREW-HEADS..

SPECIFICATION forming part of Letters Patent No. 416,329, dated December 3, 1889.

v Application tiled September 21, 1889.A Serial No. 324,651. (No model.)

Tov all whom t may concern:

Be it known` that I, HARRY FERGUSON, of New York, in the county and State of New York, have invented a certain new and useful Improvement in Coverings for Screw- Heads, of which the following is a specification.

My improvement is designed to so cover the heads of screws when they are engaged with wood or other material that they will not be exposed to View.

I will describe myimprovement in detail, and then point out the novel features in a claim.

In the accompanying drawings, Figure I is a face View of a covered screw-head embodying my improvement, showing the same as engaged with a piece of wood. Fig. 2 is a vertical section of the piece of wood and of the covering for the screw-head, the screw itself being shown in full lines. Fig. 3 is a detail View of one portion of the covering. Fig. 4 is a detail view of another portion of the covering. Fig. 5 is a detail view showing the portion of the covering shown in Fig. 3 as applied to the screw-head. Fig. 6 is a view similar to Fig. 5, but showing a modification. Figs. 3, 4, and 5 are on a larger scale than Figs. l and 2.

Similar letters of reference designate corresponding parts in all the igures.

In carrying out my improvement I employ a member A of the covering for the screwhead. Tlre member A has upon its upper side a cylindrical opening a. The sides of this opening are formed by an annular cylindrical flange a. The lower portion of the member A is provided about centrally with an opening a2.

In the examples of myimprovement shown in Figs. 2, 3,and 5 the metal between the iiange a and the opening d2 extends inwardly and downwardly at anangle. This is for the purpose of accommodating screw-heads -having angularly-extending under sides, and the radius of the angle upon the member A is -intended to correspond approximately with the radius of the angle upon the under side of a screw-head adapted to fit the same, so that when the screw-head rests within the member A it will fit the angularly-extending portion, substantially as shown in Fig. 5.

'The opening a2 upon the lower side of the member A is intended to be of but slightly greater diameter than is the shank of the screw upon which the covering is employed. When the screw is in place within the member A, the flange a extends above the upper n surface of the screw-head.

In the example of my improvement shown in Fig-6 the member A, instead of having an angularly-extending portion below the Ilanfre a has a horizontall -extendino ora a y a:

lpassed downwardly over the upper end of the screw-head and within the flange a', the latter being of suflicientlyA greater diameter than that of the member B to admit of this. When in such position, a suitable tool is employed 'to bend the flange c' over the edge of the member B, as shown more clearly in Figs. I and 2. The member Bis thus effectively secured, while at the same time the screw-head is fully concealed, as shown more clearly in Fig. I.

If for any purpose it should be desired to remove the screw,it is but necessary to bend back Ithe flange a and remove the member B. The screw may be then withdrawn by a screw-driver in the usual way.

By my improvement I provide a simple and effective means for concealing a screwhead and preventing the unsightly appearance which such screw-heads often present.

What I claim as my invention, and desire to secure by Letters Patent, is

A covering fora screw-head, comprising two members, one of which constitutes a relOO head after the driving of the screw, substantially as specified.

HARRY FERGUSON.

Witnesses:

FREDK. HAYNEs, .ToliIN BICKET. 

